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The nickel prototype, which is the same shape and size as a regular nickel, but instead of Thomas Jefferson has a profile of Martha Washington in a mob cap and dummy text instead of "E Pluribus Unum."

Coining Less Expensive Currency

Nickels are ubiquitous in American life, tumbling around in pockets, rolling under car seats, and emerging from the back of dryers to be used over and over for
illustration. gray disk. green rods come up from the disk.

Hanging by a Nanowhisker

If Alexander Yulaev and his colleagues had their druthers, they’d do away with whiskers altogether. These scientists don’t have anything against facial hair
Artwork shows a hand with tweezers inserting a piece of DNA in a larger strand. The smaller piece has a black and white barcode attached.

From Clipping Scissors to Word Processor

Using the gene-editing tool CRISPR to snip at DNA is often akin to using scissors to edit a newspaper article. You can cut out words, but it’s difficult to
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